EP2103865A1 - Codage de positionnement dans un appareil d'éclairage - Google Patents

Codage de positionnement dans un appareil d'éclairage Download PDF

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Publication number
EP2103865A1
EP2103865A1 EP08103673A EP08103673A EP2103865A1 EP 2103865 A1 EP2103865 A1 EP 2103865A1 EP 08103673 A EP08103673 A EP 08103673A EP 08103673 A EP08103673 A EP 08103673A EP 2103865 A1 EP2103865 A1 EP 2103865A1
Authority
EP
European Patent Office
Prior art keywords
lighting fixture
orientation
internal processor
sensor
fixture according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08103673A
Other languages
German (de)
English (en)
Inventor
Thomas Vinther
Niels Jørgen Rasmussen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harman Professional Denmark ApS
Original Assignee
Martin Professional ApS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Martin Professional ApS filed Critical Martin Professional ApS
Publication of EP2103865A1 publication Critical patent/EP2103865A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/15—Adjustable mountings specially adapted for power operation, e.g. by remote control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios

Definitions

  • the present invention relates to a lighting fixture comprising at least one fixed element, to which fixed element controllable moving elements are rotating fastened, where one moving element comprises at least one light source, which light source generates a beam of light, which lighting fixture comprises at least one internal processor.
  • position detectors are well-known as electronic integrated circuits which based on gravity can tell the actual position in relation to three orthogonal axes. These integrated circuits are known for different purposes such as changing the direction of an LCD display independent on how e.g. a mobile phone is orientated.
  • a lighting fixture as described in the preamble to claim 1 if modified if at least the fixed element comprises an orientation-sensor, which orientation-sensor detects at least 3 orthogonal axes, which sensor is transmitting orientation signals to an internal processor in the lighting fixture, which processor calculate the actual fixed elements orientation in respect to gravity.
  • the computer that controls the lightning fixture knows the actual position of each component in the lightning fixture independent of gravity.
  • This information can be used in the head, e.g. for changing the text in a display always to be presented correctly upwards.
  • the information about the actual orientation can result in a very fast start-up of a light fixture. Because the positions are well-known there is not need for turning e.g. pan or tilt into end position to reach a reset position.
  • the actual position in relation to gravity can also be highly effective in predicting the cooling demand in the light fixture.
  • the lighting fixture comprises at least at least one controllable fan.
  • a controllable fan it is possible to adjust the rotationale speed of that fan and thereby the amount of air circulated in a light fixture independent of the actual position of a head.
  • the lighting fixture can comprise at least one thermo sensor, which thermo sensors are measuring internal temperature in the lighting fixture, which thermo sensors further measure ambient temperature, which thermo sensors transmit temperature data to the internal processor.
  • thermo sensors are measuring internal temperature in the lighting fixture, which thermo sensors further measure ambient temperature, which thermo sensors transmit temperature data to the internal processor.
  • the internal processor can receive position data from the moving elements. Depending on where the position detector is placed, positions detections from other components are necessary to achieve the best result. Only in this way, the actual position of a moving component can be well-known by the processor.
  • the internal processor calculate cooling demand for the light fixture based on actual position of the moving elements of the lighting fixture and input from thermo-sensors.
  • thermo-sensors In a typical light fixture, there are a number of blowing means placed at different positions. All these blowing means are probably controlled by a processor.
  • This processor can by actual position indication be programmed so that it works as a feed-forward regulator where also information form thermo sensors are used in the regulation, probably as a feedback system. By combining a feed forward regulation based on the actual position of the head combined with a feedback based on the actual measured temperature inside the head there can be achieved a highly effective thermal regulation in the light fixture.
  • the internal processor can predict a future cooling demand based on position and temperature data and based on the actual activity in the lighting fixture. Further, it is possible if a programme in the light fixture has knowledge of future activity it is also possible to use that known future activity as a feed forward signal for the regulation of the cooling demand.
  • the internal processor can also control the operation of at least one fan in the lighting fixture. It is preferred that the internal processor is able to control the air circulation in the light fixture. This can be achieved if at least one fan in the lighting fixture is controlled by the processor. In most embodiments for the invention, a number of fans will be controlled by the internal processor in order to not only adjust to the airflow, but in some situation also shift direction of the air circulation in the lighting fixture.
  • the internal processor control both speed and direction of the fan output appropriate to cool desired areas. It is preferred that the processor has the total control over fans in the lighting fixture so that both speed and direction can be regulated. By performing this regulation, the power demand for the different fans in a light fixture might be reduced simply because fans are only operating if there is a direct demand for cooling.
  • the lighting fixture can comprise absolute encoding devices, which encoding devices are indicating the angular placement of a first moveable element in relation to the fixed element, where a further encoding devise measures the angular relative movement between a first moveable element and a second moveable element.
  • a position detector e.g. is placed at a main circuit in the base of a light fixture in order to get information about the actual position of the head, it is necessary to measure the actual position of the pan and tilt of the head. This could effectively be performed it an absolute encoding device is picking up position indications.
  • the absolute encoding devices comprises a gearbox, which gearbox comprises a first input axel and a second internal axel, which first input axle is driving a first toothed timing wheel, which first toothed timing wheel is intermeshing with a second toothed timing wheel, which second toothed timing wheel rotates the second axel with a angular velocity different from the angular velocity of the first input axle.
  • gearbox comprises a first input axel and a second internal axel, which first input axle is driving a first toothed timing wheel, which first toothed timing wheel is intermeshing with a second toothed timing wheel, which second toothed timing wheel rotates the second axel with a angular velocity different from the angular velocity of the first input axle.
  • One possible way of producing an encoding device is using a gear box. Using this gear box several turns can be performed at the input shaft and the electronic signals from the gear box will still contain a perfect indication of the actual position.
  • the first and second axles comprises magnets at the axle ends, which magnets generates a magnetic field mostly perpendicular to the longitudinal direction of the axels, which magnets each facing a sensor PCB which sensor PCB transmit the signals from the sensors to the internal processor.
  • Fig 1 shows a system 2 for rotating a head of a light fixture.
  • a motor 4 comprises a driving wheel 12, which driving wheel drives a belt 14, which belt 14 is kept tight by a belt tighter 6.
  • the belt tighter comprises a fixture 18 and a tighten wheel 20, which fixture 20 is under tension by a spring 22.
  • An absolute encoding module 10 comprises an input wheel 24 driven by the belt 14. The input wheel 24 rotates a first axel, which first axel rotates a second axel 26 with a different speed. Further drives the belt 14 a wheel 8,30 connected to a head.
  • the actual position of the wheel 30 can be indicated by the absolute encoding module 10.
  • FIG. 2 shows an absolute encoding module 100 comprising an input axle 102 and a second axle 104. These axles 102,104 are supported by means of bearings inside a housing 106. An end plate 108 is by means of bolts 110 connected to the housing 106. The input shaft 102 is connected to a first toothed wheel 112 and the second shaft 104 is connected to tooth wheel 114. Placed at the end plate 108 is shown magnetic detecting devices 116 and 118. These magnetic detection devices 116,118 are cooperating with magnets 120 and 122 which are connected to the end of the shafts 102 and 104.
  • the rotation of the input shaft 102 will be indicated by the magnetic detector 116. But at the same time as the input shaft 102 starts rotating the toothed wheel 112 is interacting with the toothed wheel so that the shaft 104 is rotated as well. Because there is a difference in the number of tooth at the toothed wheel 112 and 114, the shaft 104 will rotate at a speed slower or faster than the shaft 102. These differences in velocity of the shafts 102,104 will result in a sufficient difference in the signals indicated by the magnetic detectors 116 and 118.
  • an electronic microprocessor can achieve a highly accurate angular position of the shaft 102. This position will be highly accurate even if the shaft 102 is turned in several rotations in one or another direction which is sufficient for precise indication of the position in pan or tilt of a light fixture.
  • Figure 3 shows the same embodiment as figure 2 , but seen from the backside and the end plate and the magnetic detectors are removed.
  • Figure 3 shows the input shaft 102 placed in the housing 106.
  • the bolts 110 are also indicated.
  • the toothed wheels 112 and 114 are interfering with each other.
  • the magnets 120 and 122 are also shown.
  • each detector could deliver a sinus signal.
  • sinus signals having different frequency are compared very long time differences can occur before the same position of both sinus curves are achieved. Therefore rotating of the wheels can be performed for several rotations and there will still be a total position indication.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Position Or Direction (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP08103673A 2008-03-17 2008-04-23 Codage de positionnement dans un appareil d'éclairage Withdrawn EP2103865A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DKPA200800409 2008-03-17

Publications (1)

Publication Number Publication Date
EP2103865A1 true EP2103865A1 (fr) 2009-09-23

Family

ID=39577685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08103673A Withdrawn EP2103865A1 (fr) 2008-03-17 2008-04-23 Codage de positionnement dans un appareil d'éclairage

Country Status (3)

Country Link
US (1) US20090231852A1 (fr)
EP (1) EP2103865A1 (fr)
CN (1) CN101430075B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011100973A1 (fr) * 2010-02-16 2011-08-25 Martin Professional A/S Moyen tendeur de courroie intégré dans une partie en coquille d'un dispositif d'éclairage
US8801225B2 (en) 2010-02-16 2014-08-12 Martin Professional A/S Moving head light fixture with bucket shaped head
US9920914B2 (en) 2012-03-20 2018-03-20 Martin Professional Aps Moving head light fixture with yoke and head position encoding means
WO2022258489A1 (fr) 2021-06-07 2022-12-15 Signify Holding B.V. Commande de panoramique et d'inclinaison de luminaire

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK177579B1 (en) * 2010-04-23 2013-10-28 Martin Professional As Led light fixture with background lighting
CN102520394A (zh) * 2011-12-09 2012-06-27 南京大学 利用照明系统实现室内定位的方法
CN105981084B (zh) * 2014-01-02 2020-02-21 飞利浦灯具控股公司 照明单元、灯具和网络
CN105180119A (zh) * 2015-08-06 2015-12-23 广州市浩洋电子有限公司 舞台灯的自适应热学系统及控制方法
JP2019526888A (ja) * 2016-07-21 2019-09-19 シグニファイ ホールディング ビー ヴィ 符号化光機能を備えるランプ
CN107763587B (zh) * 2016-08-23 2023-12-01 广州市浩洋电子股份有限公司 一种移动式送风的舞台灯热学系统
US10274175B1 (en) 2018-01-04 2019-04-30 Electronic Theatre Controls, Inc. Systems and methods for controlling the position of a moving light fixture
US10794571B2 (en) 2019-07-22 2020-10-06 Robe Lighting S.R.O. Disturbance sensing system for an automated moving-mirror luminaire

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US20060023168A1 (en) * 2003-02-07 2006-02-02 Belliveau Richard S Theatrical fog particle protection system for image projection lighting devices
EP1640795A1 (fr) * 2004-09-27 2006-03-29 Sanyo Electric Co., Ltd. Affichage de vidéo par projection
WO2006075297A1 (fr) * 2005-01-11 2006-07-20 Muvis S.R.L. Systeme de telecommande d'eclairage destine aux espaces
US20070028470A1 (en) * 2005-08-04 2007-02-08 Nash Derek J Laser reference device
US20070152552A1 (en) * 2005-12-29 2007-07-05 Benq Corporation Filtering device and projector utilizing the same
US20080055474A1 (en) * 2006-09-06 2008-03-06 Coretronic Corporation Projection apparatus and an automatic image adjustment method thereof

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Publication number Priority date Publication date Assignee Title
US20060023168A1 (en) * 2003-02-07 2006-02-02 Belliveau Richard S Theatrical fog particle protection system for image projection lighting devices
EP1640795A1 (fr) * 2004-09-27 2006-03-29 Sanyo Electric Co., Ltd. Affichage de vidéo par projection
WO2006075297A1 (fr) * 2005-01-11 2006-07-20 Muvis S.R.L. Systeme de telecommande d'eclairage destine aux espaces
US20070028470A1 (en) * 2005-08-04 2007-02-08 Nash Derek J Laser reference device
US20070152552A1 (en) * 2005-12-29 2007-07-05 Benq Corporation Filtering device and projector utilizing the same
US20080055474A1 (en) * 2006-09-06 2008-03-06 Coretronic Corporation Projection apparatus and an automatic image adjustment method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011100973A1 (fr) * 2010-02-16 2011-08-25 Martin Professional A/S Moyen tendeur de courroie intégré dans une partie en coquille d'un dispositif d'éclairage
EP2536975A1 (fr) * 2010-02-16 2012-12-26 Martin Professional A/S Moyen tendeur de courroie intégré dans une partie en coquille d'un dispositif d'éclairage
EP2536975A4 (fr) * 2010-02-16 2013-07-24 Martin Professional As Moyen tendeur de courroie intégré dans une partie en coquille d'un dispositif d'éclairage
US8727570B2 (en) 2010-02-16 2014-05-20 Martin Professional A/S Belt tensioning means integrated into illumination device shell part
US8764229B2 (en) 2010-02-16 2014-07-01 Martin Professional A/S Optical lens securing assembly for an illumination device
US8801225B2 (en) 2010-02-16 2014-08-12 Martin Professional A/S Moving head light fixture with bucket shaped head
US9920914B2 (en) 2012-03-20 2018-03-20 Martin Professional Aps Moving head light fixture with yoke and head position encoding means
WO2022258489A1 (fr) 2021-06-07 2022-12-15 Signify Holding B.V. Commande de panoramique et d'inclinaison de luminaire

Also Published As

Publication number Publication date
CN101430075A (zh) 2009-05-13
CN101430075B (zh) 2011-01-12
US20090231852A1 (en) 2009-09-17

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